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CVE-2026-42183

Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS (gatekeeper.go) PUBLISHED

Description (CNA)

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, a nil pointer dereference in server/auth/gatekeeper.go rbacAuthorization() causes a panic (denial of service) for SSO users whose claims match a namespace-level RBAC rule but not an SSO-namespace rule, when SSO_DELEGATE_RBAC_TO_NAMESPACE=true. This issue has been patched in version 4.0.5.

Affected (CNA)

Vendor / productVersions
argoproj / argo-workflowsaffected >= 4.0.0, < 4.0.5

CWE

CWE-476

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.